- started with cleanup and separation of DECORATE code.
* everything related to scripting is now placed in a subdirectory 'scripting', which itself is separated into DECORATE, ZSCRIPT, the VM and code generation. * a few items have been moved to different headers so that the DECORATE parser definitions can mostly be kept local. The only exception at the moment is the flags interface on which 3 source files depend.
This commit is contained in:
Christoph Oelckers
parent
6a8ab9a4d3
commit
b1a83bfd26
132 changed files with 234 additions and 198 deletions
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/*
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** vmexec.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright -2016 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include <math.h>
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#include "vm.h"
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#include "xs_Float.h"
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#include "math/cmath.h"
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#define IMPLEMENT_VMEXEC
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#if !defined(COMPGOTO) && defined(__GNUC__)
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#define COMPGOTO 1
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#endif
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#if COMPGOTO
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#define OP(x) x
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#define NEXTOP do { unsigned op = pc->op; a = pc->a; pc++; goto *ops[op]; } while(0)
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#else
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#define OP(x) case OP_##x
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#define NEXTOP break
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#endif
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#define luai_nummod(a,b) ((a) - floor((a)/(b))*(b))
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#define A (pc[-1].a)
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#define B (pc[-1].b)
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#define C (pc[-1].c)
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#define Cs (pc[-1].cs)
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#define BC (pc[-1].i16u)
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#define BCs (pc[-1].i16)
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#define ABCs (pc[-1].i24)
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#define JMPOFS(x) ((x)->i24)
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#define KC (konstd[C])
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#define RC (reg.d[C])
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#define PA (reg.a[A])
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#define PB (reg.a[B])
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#define ASSERTD(x) assert((unsigned)(x) < f->NumRegD)
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#define ASSERTF(x) assert((unsigned)(x) < f->NumRegF)
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#define ASSERTA(x) assert((unsigned)(x) < f->NumRegA)
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#define ASSERTS(x) assert((unsigned)(x) < f->NumRegS)
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#define ASSERTKD(x) assert(sfunc != NULL && (unsigned)(x) < sfunc->NumKonstD)
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#define ASSERTKF(x) assert(sfunc != NULL && (unsigned)(x) < sfunc->NumKonstF)
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#define ASSERTKA(x) assert(sfunc != NULL && (unsigned)(x) < sfunc->NumKonstA)
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#define ASSERTKS(x) assert(sfunc != NULL && (unsigned)(x) < sfunc->NumKonstS)
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#define THROW(x) throw(EVMAbortException(x))
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#define CMPJMP(test) \
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if ((test) == (a & CMP_CHECK)) { \
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assert(pc->op == OP_JMP); \
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pc += 1 + JMPOFS(pc); \
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} else { \
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pc += 1; \
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}
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#define GETADDR(a,o,x) \
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if (a == NULL) { THROW(x); } \
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ptr = (VM_SBYTE *)a + o
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static const VM_UWORD ZapTable[16] =
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{
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0x00000000, 0x000000FF, 0x0000FF00, 0x0000FFFF,
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0x00FF0000, 0x00FF00FF, 0x00FFFF00, 0x00FFFFFF,
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0xFF000000, 0xFF0000FF, 0xFF00FF00, 0xFF00FFFF,
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0xFFFF0000, 0xFFFF00FF, 0xFFFFFF00, 0xFFFFFFFF
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};
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#ifdef NDEBUG
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#define WAS_NDEBUG 1
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#else
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#define WAS_NDEBUG 0
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#endif
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#if WAS_NDEBUG
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#undef NDEBUG
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#endif
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#undef assert
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#include <assert.h>
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struct VMExec_Checked
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{
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#include "vmexec.h"
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};
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#if WAS_NDEBUG
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#define NDEBUG
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#endif
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#if !WAS_NDEBUG
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#define NDEBUG
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#endif
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#undef assert
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#include <assert.h>
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struct VMExec_Unchecked
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{
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#include "vmexec.h"
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};
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#if !WAS_NDEBUG
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#undef NDEBUG
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#endif
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#undef assert
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#include <assert.h>
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int (*VMExec)(VMFrameStack *stack, const VMOP *pc, VMReturn *ret, int numret) =
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#ifdef NDEBUG
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VMExec_Unchecked::Exec
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#else
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VMExec_Checked::Exec
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#endif
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;
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//===========================================================================
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//
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// VMSelectEngine
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//
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// Selects the VM engine, either checked or unchecked. Default will decide
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// based on the NDEBUG preprocessor definition.
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//
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//===========================================================================
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void VMSelectEngine(EVMEngine engine)
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{
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switch (engine)
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{
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case VMEngine_Default:
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#ifdef NDEBUG
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VMExec = VMExec_Unchecked::Exec;
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#else
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#endif
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VMExec = VMExec_Checked::Exec;
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break;
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case VMEngine_Unchecked:
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VMExec = VMExec_Unchecked::Exec;
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break;
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case VMEngine_Checked:
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VMExec = VMExec_Checked::Exec;
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break;
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}
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}
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//===========================================================================
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//
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// VMFillParams
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//
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// Takes parameters from the parameter stack and stores them in the callee's
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// registers.
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//
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//===========================================================================
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void VMFillParams(VMValue *params, VMFrame *callee, int numparam)
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{
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unsigned int regd, regf, regs, rega;
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VMScriptFunction *calleefunc = static_cast<VMScriptFunction *>(callee->Func);
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const VMRegisters calleereg(callee);
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assert(calleefunc != NULL && !calleefunc->Native);
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assert(numparam == calleefunc->NumArgs);
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assert(REGT_INT == 0 && REGT_FLOAT == 1 && REGT_STRING == 2 && REGT_POINTER == 3);
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regd = regf = regs = rega = 0;
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for (int i = 0; i < numparam; ++i)
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{
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VMValue &p = params[i];
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if (p.Type < REGT_STRING)
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{
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if (p.Type == REGT_INT)
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{
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calleereg.d[regd++] = p.i;
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}
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else // p.Type == REGT_FLOAT
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{
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calleereg.f[regf++] = p.f;
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}
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}
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else if (p.Type == REGT_STRING)
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{
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calleereg.s[regs++] = p.s();
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}
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else
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{
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assert(p.Type == REGT_POINTER);
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calleereg.a[rega] = p.a;
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calleereg.atag[rega++] = p.atag;
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}
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}
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}
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